KR20100107814A - Laser cutter and cutting apparatus therewith - Google Patents

Abstract

PURPOSE: A laser cutting machine and a cutting apparatus including the same are provided to carry out effective cutting and restrict a failure by accurately focusing laser beam on the surface of an object. CONSTITUTION: A laser cutting machine(100) comprises a laser generating unit(110) and a cutting unit(130). The cutting unit has a light collecting and reflecting part which controls the optical width of the laser beam generated by the laser generating unit and cuts an object using the laser beam reflected by the light collecting and reflecting part.

Description

LASER CUTTER AND CUTTING APPARATUS THEREWITH}

The present invention relates to a cutting device, and more particularly to a laser cutting machine for cutting a material using a laser and a cutting device having the same.

In general, the hot rolling process is a slab-shaped material heated at a constant temperature in a heating furnace, subjected to a rough rolling process, and processed into a bar shape having a predetermined thickness, and then the bar is added to the finishing rolling process. It is a process to finish hot products by processing them into strips of the thickness required by the consumer and then winding them in the form of coils.

During the hot rolling process, in order to process the material processed to a constant thickness in the rough rolling process in the form of a strip through the finishing rolling process, the finishing rolling process with a part of the front end and the rear end of the material where the crop is formed is cut in advance. Must be supplied.

In general, the tip end of the raw material undergoing the rough rolling process is formed in a round shape, and the rear end is formed in a round shape having a fish tail shape. In the crop is formed.

When the material is not removed from the front end and the rear end, it is introduced into the finishing rolling process, and during the finishing rolling process, the cropped portion of the front end and the rear end is extended longer, causing shortage of the strip after the process. In addition, this may lead to a problem of cutting the entire amount of the front end and the rear end of the strip, and may cause plate twisting, particularly at the rear end of the material cracked into a fish tail shape.

Therefore, in the hot rolling mill, a cutting machine is provided in front of the finishing rolling process, so that the front end and the rear end of the raw material must be cut by a certain amount before the raw material produced in the rough rolling process enters the finishing rolling process.

A cutter generally provided in a hot rolling mill includes a blade of a metal body, which rotates about a drum rotatably provided to perform cutting of a portion of the front end portion and the rear end portion of the material.

 Since the cutter performs a cutting operation using a metal blade, there is a problem that it is difficult to properly perform a cutting operation on a material having a strength greater than or equal to a certain strength that the blade cannot cut.

Therefore, there is a need for improvement.

The present invention has been made to improve the above problems, and an object thereof is to provide a laser cutting machine and a cutting device having the same structure to improve the cutting operation without being affected by the strength of the material.

The laser cutting machine according to the first aspect of the present invention comprises: an oscillation unit for oscillating a laser; And a cutting unit configured to adjust the light width of the laser oscillated by the oscillation unit, and to cut the material by irradiating the laser reflected from the light reflecting unit.

In addition, the light converging reflector preferably includes a reflecting mirror having a reflecting surface whose radius of curvature is changed by pressing.

In addition, the cutting unit, the main body portion; A cutting part installed on the main body, the cutting part including a light collecting part for collecting and irradiating a laser reflected by the light reflecting part and the light reflecting part; And a cutting moving part for moving the cutting part in a second direction.

The cutting unit may further include a light collecting unit for moving the light collecting unit in a third direction.

In addition, the cutting unit preferably further comprises a main body moving portion for moving the main body portion in the first direction.

In addition, the cutting unit preferably further includes an injection unit for injecting gas toward the irradiation position of the laser.

In addition, the present invention preferably further comprises a reflecting unit for reflecting the laser oscillating in the oscillation unit to the light reflecting unit.

According to a second aspect of the present invention, a laser cutting machine includes: an oscillation unit for oscillating a laser; A reflecting unit reflecting the laser oscillated by the oscillating unit and adjusting the width of the reflected laser; And a cutting unit for cutting the material by irradiating the laser reflected from the reflection unit.

The reflector may include a first reflector that is oscillated by the oscillation unit and a second reflector that reflects the laser reflected by the first reflector to the cutting unit and interlocks with the cutting unit; At least one of the first reflecting portion and the second reflecting portion preferably includes a reflecting mirror having a reflecting surface whose radius of curvature is changed by pressing.

The cutting device according to the third aspect of the present invention includes: an oscillation unit for oscillating a laser, and a light converging reflector for adjusting the width of the laser oscillated by the oscillating unit, and irradiating a laser reflected from the condensing reflector to produce a material. A laser cutter having a cutting unit for cutting; And a mechanical cutter having a knife unit to cut the material.

The cutting device according to the fourth aspect of the present invention comprises: an oscillating unit for oscillating a laser, a reflecting unit for reflecting a laser oscillating at the oscillating unit, and adjusting a width of the reflected laser and a laser reflected from the reflecting unit Laser cutting machine having a cutting unit for cutting the material; And a mechanical cutter having a knife unit to cut the material.

The mechanical cutting machine may further include a drum unit rotatably disposed at at least one of the upper and lower portions of the material; The knife unit is preferably installed in the drum to contact the material when the drum rotates to cut the material.

In another aspect, the present invention further comprises a control unit for operating any one selected from the laser cutter and the mechanical cutter.

According to the laser cutting machine of the present invention and the cutting device having the same, by cutting the material using a laser, the material having a strength that can not be cut by the blade can be cut enough, such as material, thickness, strength, etc. Crops formed on the material can be effectively cut and removed without being affected by the properties of the material.

In addition, the present invention can accurately perform the cutting operation and suppress the occurrence of defects by precisely matching the focus of the laser to the surface of the portion to be cut, regardless of the position of the cutting portion and the collecting portion.

In addition, the present invention includes a laser cutting machine and a mechanical cutting machine in one device, and any one of which is selectively operated according to the characteristics of the material to perform a cutting operation on a portion of the cropped material, so that the maintenance and operation The cost can be reduced and the cutting work on the part of the cropped material can be performed effectively.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a laser cutting machine and a cutting device having the same according to the present invention. For convenience of explanation, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a view schematically showing a cutting device according to an embodiment of the present invention, Figure 2 is a view showing a laser cutting machine shown in Figure 1, Figure 3 is a view showing a cutting unit shown in FIG. 4 is a view schematically showing the light reflecting unit shown in FIG. 3.

First, referring to FIG. 1, a cutting device 500 according to an embodiment of the present invention includes a laser cutter 100 and a mechanical cutter 200.

2, the laser cutting machine 100 includes an oscillation unit 110, a reflection unit 120, and a cutting unit 130.

The oscillation unit 110 is provided to oscillate the laser. The oscillation unit 110 oscillates a laser beam for cutting the material 10 in the form of a beam and irradiates toward the reflection unit 120.

The reflection unit 120 reflects the laser oscillated by the oscillation unit 110. The reflective unit 120 includes a first reflecting unit 121 and a second reflecting unit 125.

The first reflector 121 is disposed at a position close to the oscillation unit 110. The laser oscillated by the oscillation unit 110 is irradiated to the first reflecting portion 121 and reflected by the first reflecting portion 121. The first reflector 121 and the second reflector 125 to be described later may include a reflector for reflecting the laser.

By the first reflecting portion 121, the laser is reflected toward the second reflecting portion 125 side. The second reflector 125 reflects the laser reflected by the first reflector 121 toward the cutting unit 130. The second reflecting unit 125 is provided to interlock with the cutting unit 130. According to the present embodiment, the second reflecting unit 125 is installed in the cutting unit 130 and moved together with the cutting unit 130. The first reflecting unit 121 and the second reflecting unit 125 may be connected by an elastic corrugated pipe (not shown).

The cutting unit 130 cuts the material by irradiating the laser reflected by the reflection unit 120. The cutting unit 130, as shown in Figure 3, includes a body portion 131 and the cutting portion 135.

The main body 131 is disposed above the material 10, and is disposed to cross the material 10 in the width direction of the material 10. The body 131 is provided to be movable in the first direction on the upper portion of the material 10. Here, the first direction is a direction parallel to the moving direction of the raw material 10 and is defined to include the moving direction of the raw material 10 and its reverse direction.

Cutting unit 130 of the present embodiment may further include a body moving unit 133. The main body moving part 133 is provided to move the main body part 131 in the first direction. As an example, the main body moving unit 133 may include an LM guide (not shown) and a driving motor (not shown), and the main body 131 may be installed in the LM guide.

According to this, the main body 131 is guided in the direction of movement by the LM guide, and is moved by the driving force of the driving motor, but may be moved in the first direction along the LM guide.

The cutout part 135 is installed at the main body part 131 and collects a laser beam reflected by the reflection unit 120 to irradiate the material 10. The cutting unit 135 includes a light reflecting unit 136 and a light collecting unit 137.

The light reflecting unit 136 reflects the laser reflected by the second reflecting unit 125 of the reflecting unit 120, and adjusts the width of the incident laser to reflect the light toward the light collecting unit 137.

The light reflecting unit 136 includes a reflector 136a having a reflecting surface 136b on which the laser is reflected, as shown in FIG. 4. According to the present embodiment, the reflecting surface 136b of the reflecting mirror 136a is provided so that its radius of curvature can be changed by pressing.

Preferably, the reflective surface 136b is formed in a circular thin film so that its shape can be deformed by pressing, and a space portion for accommodating air may be formed inside the reflective mirror 136a. In addition, air may be injected into the reflector 136a by an air pump.

The reflecting surface 136b may be changed in shape by pneumatic pressure that changes according to the amount of air injected into the reflecting mirror 136a, and thus the radius of curvature of the reflecting surface 136b may be changed.

For example, if the center of the reflecting surface 136b when no air pressure acts on the reflecting surface 136b is located at the "a" position, when the air pressure acts on the reflecting surface 136b, the reflecting surface 136b is applied. The position of the center may be sequentially changed to the position "b" or "c", so that the radius of curvature of the reflective surface 136b is changed according to the position of the center of the reflective surface 136b.

Referring to FIG. 3, the light collecting unit 137 cuts the material 10 by collecting the laser reflected by the light reflecting unit 136 and irradiating the material 10. The condenser 137 may include a condenser lens for condensing a laser.

According to this embodiment, the cutout part 135 and the condensing part 137 provided in the cutout part 135 are each provided so that a movement is possible. In addition, the cutting unit 130 further includes a cutting moving part 134 for moving the main body part 131, and the cutting part 135 further includes a condensing moving part 138 for moving the light collecting part 137. .

The cutting moving part 134 is provided to move the cutting part 135 in the second direction, and the light collecting moving part 138 is provided to move the light collecting part 137 in the third direction. The cutting moving part 134 and the condensing moving part 138 may include an M guide and a driving motor, respectively.

Accordingly, the cutting unit 135 and the light collecting unit 137 are respectively guided in the direction of movement by the L guide, and are respectively moved by the driving motor, and can be moved in the second direction and the third direction along the L guide, respectively. have.

Here, the second direction is defined as being a direction orthogonal to the first direction and the transverse direction, and the third direction is defined as being a direction perpendicular to the first and second directions and the vertical direction.

On the other hand, the cutting unit 135 may further include an injection unit 139. The injection unit 139 injects gas toward the material 10, but injects gas toward the laser irradiation position. As an example, the gas injected from the injection unit 139 may be pure oxygen for industrial use.

When the laser is irradiated to the portion to be cut of the material 10 and the gas is injected, the heat input of the laser and the heat of oxidation of the gas and the material 10 act as energy for melting the material 10. The raw material 10 may be cut due to melting of the raw material 10 due to the heat of oxidation of the gas and the raw material 10. The molten metal is removed by the gas injected from the injection unit 139.

5 is a configuration diagram showing the configuration of the laser cutting machine shown in FIG.

As shown in Figure 3 and 5, the laser cutting machine 100 of the present embodiment may further include a distance measuring unit 140 and the controller 150. According to the present embodiment, the distance measuring unit 140 is installed in the cutting unit 135. The distance measuring unit 140 measures the distance between the surface of the material 10 to be cut and the light collecting unit 137 in real time. The distance measuring unit 140 may include a conventional distance sensor.

The controller 150 controls the operation of the cutting device 500 (see FIG. 1) including the oscillation unit 110, the reflection unit 120, and the cutting unit 130, and is connected to the distance measuring unit 140. Distance information between the surface of the material 10 measured by the distance measuring unit 140 and the light collecting unit 137 is transmitted to the control unit 150 in the form of an electrical signal in real time.

Hereinafter, the operation relationship of the laser cutting machine according to the present embodiment will be described in detail.

The laser oscillated by the oscillation unit 110 is irradiated toward the reflection unit 120. The controller 150 designates the output of the laser according to the characteristics of the material 10 to be cut, such as material, thickness, and strength, and the oscillation unit 110 oscillates the laser at the output specified by the controller 150.

The laser irradiated toward the reflecting unit 120 is reflected by the first and second reflecting units 121 and 125 and its reflection direction is adjusted to be finally reflected to the cutting unit 130.

The laser reflected by the reflecting unit 120 to the cutting unit 135 side of the cutting unit 130 is first reflected by the light reflecting unit 136 toward the light collecting unit 137 and then collected by the light collecting unit 137. do. The light collecting unit 137 collects a laser beam reflected by the light reflecting unit 136 and irradiates a portion to be cut, that is, a cropped portion of the material 10.

At this time, the injection unit 139, the gas is injected toward the laser irradiation position, whereby the portion of the material 10 due to the heat input of the laser and the heat of oxidation reaction of the gas and the material 10 at the portion to be cut. Melting will occur. As such, the material 10 is cut by melting due to heat input of the laser and oxidation of the gas and the material 10 during laser irradiation and gas injection, and the molten metal is removed by the gas injected from the injection unit 139. .

On the other hand, the laser beam irradiated toward the material 10 through the path as described above, the width of the laser beam is controlled by the light collecting reflector 136.

Hereinafter, the operation relationship of the laser cutting machine according to the present embodiment will be described in detail.

The laser cutting machine 100 as shown in FIGS. 1 to 5 starts the cutting of the raw material 10 from one side of the original raw material 10 and moves in the second direction, that is, in the width direction of the raw material 10. Cutting of (10) is performed, and finally, cutting of the raw material 10 on the other side of the raw material 10 is completed.

The cut portion 135 of the laser cutter 100 moves in the second direction to cut the material 10. At this time, the cutting unit 135 is moved by the operation of the cutting moving unit 134, the operation of the cutting moving unit 134 is controlled by the controller 150.

The controller 150 controls the operation of the cutting moving part 134 according to the width of the raw material 10 input to the controller 150, so that the cropping part 135 is moved by the width of the raw material 10 to form a crop. It is possible to perform a cutting operation on a portion of the material (10).

In addition, since the laser cutting machine 100 of the present embodiment sequentially performs the cutting operation on the material 10 being transferred from one side of the material 10 to the other side over a predetermined time, the material 10 in the width direction thereof. In order to cut side by side, the cut part 135 may be moved in the first direction in consideration of the moving direction and the speed of the material 10. At this time, the cutting unit 135 is moved by the movement of the main body 131 by the operation of the main body moving unit 133, the main body moving unit 133 is controlled by the control unit 150.

The control unit 150 controls the operation of the main body moving unit 133 according to the moving speed of the material 10 input to the control unit 150, so that the cutting unit 135 is moved according to the moving direction and speed of the material 10. The material 10 can be cut side by side in the width direction.

The laser cutting machine 100 of the present embodiment having the above configuration has a sufficient material 10 having a strength that the blade cannot cut by performing a cutting operation on the material 10 using a laser as described above. Since cutting is possible, a part of the material 10 in which the crop is formed can be effectively cut and removed without being influenced by the properties of the material 10 such as material, thickness, and strength.

On the other hand, according to the laser cutting machine 100 of the present embodiment, as the cutting unit 135 moves while performing the cutting operation, the path length of the laser moved to the cutting unit 135 may vary depending on the position of the cutting unit 135. have.

The laser basically has a characteristic of going straight with almost no change in the width, but a change in the width occurs to some extent while being reflected and moved through the reflector 121. For example, a laser expands its width as its path length increases.

As such, when the width of the laser is changed depending on the position of the cutting unit 135, the focus of the laser focused by the light collecting unit 137 is changed, and when the focus of the laser is changed, the focus of the laser is the material 10. Since it is not exactly matched to the surface of the portion to be cut so that the heat input of the laser is not properly transmitted to the material 10, the cutting operation of the material 10 is not properly made and a defect occurs.

According to the present embodiment, the light reflecting unit 136 adjusts the width of the laser, but maintains the laser beam reflected by the light reflecting unit 136 at the set light width. Here, the set width of the laser is when the focal point of the laser focused at the light collecting part 137 is reflected by the light collecting reflecting part 136, which is set in advance so that it can be exactly coincided with the surface of the portion to be cut off of the material 10. Is defined as being the width of the laser.

6 to 8 are views showing the operating state of the laser cutting machine shown in FIG.

First, referring to FIG. 6, the cutting portion 135 of the present embodiment is illustrated as starting a cutting operation from one side of the material 10. When the cutting unit 135 starts the cutting operation and is positioned at the point P1 to perform the cutting operation on the material 10, the path length of the laser is relatively short.

In this case, if the width of the laser incident on the light reflecting unit 136 has a width smaller than the set width, the focus of the laser focused on the light collecting unit 137 is precisely on the surface of the portion to be cut of the material 10. In order to be matched, the width of the laser reflected by the light reflecting unit 136 must be amplified to match the set width.

In this case, the controller 150 considers the position of the cutting unit 135 provided with the light reflecting unit 136 and the width of the laser reflected by the light reflecting unit 136 corresponding thereto. Control the operation.

As a result, the shape of the reflecting surface 136b of the reflecting mirror 136a is changed by pneumatic pressure. In this embodiment, it is illustrated that the shape of the reflective surface 136b is changed so that the center of the reflective surface 136b is located close to the approximately "c" position when the cutout 135 is located at the point P1 (see FIG. 4). ). The reflecting mirror 136a has a convex mirror shape as a whole, and thus the width of the laser reflected by the light reflecting unit 136 may be amplified to match the set width.

When the width of the laser reflected by the light converging reflector 136 coincides with the set width, the focus of the laser condensed by the light condenser 137 is exactly matched to the surface of the portion to be cut of the material 10. The cutting operation for 10 can be performed effectively.

While the cutting operation of the cut portion 135 continues, the cut portion 135 is moved in the second direction along the width direction of the raw material 10 and simultaneously in the first direction according to the moving direction and speed of the raw material 10. .

That is, the cutting unit 135 is moved in the width direction of the material 10 while moving in the first direction and the second direction at the same time, by being moved in the width direction and the inclined direction of the material 10, A cutting operation is carried out so that 10 can be cut side by side in the width direction.

As shown in FIG. 7, when the cutting unit 135 is moved to the first and second directions and positioned at the P2 point, the path length of the laser is cut to the cutting unit 135 when the cutting unit 135 is positioned at the P2 point. ) Is relatively increased than when it is located at the point P1.

In this case, if the width of the laser incident on the light reflecting unit 136 has a width slightly smaller or similar to the set width, the focal point of the laser focused on the light collecting unit 137 is to be cut off of the material 10. In order to be able to exactly match the surface of the light, the width of the laser reflected from the light reflecting portion 136 must be maintained at the light width of the laser incident on the light reflecting portion 136.

In this case, the controller 150 considers the position of the cutting unit 135 provided with the light reflecting unit 136 and the width of the laser reflected by the light reflecting unit 136 corresponding thereto. Control the operation.

Accordingly, the reflecting surface 136b of the reflecting mirror 136a is changed in shape by pneumatic pressure, but is changed so that the center of the reflecting surface 136b is located close to the approximately "b" position (see FIG. 4). The reflector 136a has a planar mirror shape as a whole, and thus the width of the laser reflected by the light reflecting unit 136 may be maintained to match the set width.

In addition, as shown in FIG. 8, when the cutting part 135 is moved in the first direction and the second direction to be positioned at the point P3, the path length of the laser is cut when the cutting part 135 is positioned at the point P2. Is more increased than when 135 is located at the point P2.

In this case, if the width of the laser incident on the light reflecting unit 136 has a wider width than the set width, the focus of the laser focused on the light collecting unit 137 is precisely on the surface of the portion to be cut of the material 10. In order to be matched, the width of the laser reflected by the light reflecting unit 136 must be reduced to match the set width.

In this case, the controller 150 considers the position of the cutting unit 135 provided with the light reflecting unit 136 and the width of the laser reflected by the light reflecting unit 136 corresponding thereto. Control the operation.

Accordingly, the reflecting surface 136b of the reflecting mirror 136a is changed in shape by pneumatic pressure, but is changed so that the center of the reflecting surface 136b is located close to the approximately "a" position (see FIG. 4). The reflector 136a has a concave mirror shape as a whole, and thus the width of the laser reflected by the light reflecting unit 136 may be reduced to match the set width.

On the other hand, even if the width of the laser is maintained at the set width by the above process, if there is a difference in height on the surface of the portion to be cut, such as the surface of the material 10 is formed unevenly, the light collecting part 137 The focal point of the laser focused and irradiated by) may not exactly coincide with the surface of the portion to be cut of the material 10.

According to the present embodiment, as shown in FIGS. 5 to 8, while the cutting operation is performed by the cutting unit 135, the distance measuring unit 140 together with the cutting unit 135 in the first direction and the second direction. Moving to and measuring the distance between the surface of the portion to be cut of the material 10 and the light collecting unit 137 in real time, and transmits the change value of the measured distance to the controller 150 in the form of an electrical signal.

The control unit 150 receiving the electric signal calculates the moving distance of the light collecting unit 137 in real time according to the distance change value between the surface of the portion to be cut of the material 10 and the light collecting unit 137 and calculates the calculated movement. The light collecting unit 138 controls the operation of the light collecting unit 138 in real time to move the light collecting unit 137 in the third direction by a distance.

Accordingly, the light collecting part 137 accurately matches the surface of the portion to be cut of the material 10, that is, the focal point of the laser focused and irradiated by the light collecting part 137 to the surface of the portion to be cut of the material 10. To maintain the optimal distance.

The laser cutting machine 100 according to the present embodiment including the reflection unit 120 and the distance measuring unit 140 may focus the laser on the material 10 regardless of the positions of the cutting unit 135 and the light collecting unit 137. By exactly matching the surface of the portion to be cut, the cutting operation can be effectively performed and the occurrence of defects can be suppressed.

9 is a view showing a cutting state of the material by the cutting device according to an embodiment of the present invention.

1 and 9, the mechanical cutter 200 is disposed in parallel with the laser 100 cutter in the moving direction of the material 10. The mechanical cutter 200 includes a drum 210 and a knife 220.

The drum unit 210 is rotatably disposed in at least one of the upper and lower portions of the material 10. According to this embodiment, the drum unit 210 is provided with a pair is illustrated to be disposed on the top and bottom of the material 10 with respect to the material (10).

The knife unit 220 is installed in the drum unit 210. The knife unit 220 is formed of a metal material, and a blade is formed at one side in contact with the material 10. The knife unit 220 is installed on the outer circumferential surface of each drum unit 210, a material formed in contact with the material 10 while being rotated around the drum unit 210 when the drum unit 210 is rotated The crop is removed by cutting a portion of (10).

Since the laser cutting machine 100 sequentially performs the cutting operation on the material 10 being conveyed from one side of the material 10 to the other side over a predetermined time, as shown in FIG. 9, the width of the material 10 is widened. In order to cut side by side, the crop is removed by performing the cutting operation in the width direction and the inclined direction of the material 10 in consideration of the moving direction and the speed of the material 10.

On the other hand, the mechanical cutter 200 performs the cutting operation on the material 10 being conveyed, as in the case of the laser cutting machine 100, but the cutting operation on the portion of the material 10 in which the crop is formed Execute at once from one side to the other side.

The mechanical cutter 200 has an advantage that the operation is simple, compared to the laser cutter 100, the cost of maintenance and operation is low.

According to the cutting device 500 of the present embodiment, the laser cutting machine 100 and the mechanical cutting machine 200 is preferably any one of the two is operated as necessary.

When the information on the characteristics of the material 10 to be cut into the controller 150, for example, the material, thickness, and strength of the material 10 is input, the controller 150 may be configured to the characteristics of the material 10 previously input. Select whether to perform the cutting operation by operating the laser cutting machine 100 or the mechanical cutting machine 200 based on the reference value for the laser cutting machine 100 and the mechanical cutting machine 200 The selected one is operated to perform the cutting operation on the material 10.

For example, a reference value for the characteristics of the material 10 previously input to the controller 150 is API steel (API: American X-80 standard) When the strength of the material 10 to be cut is a steel material having a lower strength than that of the API X-80 standard steel, and the information about the characteristics of the material 10 is input to the controller 150, 150 operates the mechanical cutter 200 to perform a cutting operation for the material (10).

On the contrary, when the material 10 to be cut is a steel material having a strength equal to or greater than that of the API X-80 standard, and the information about the characteristics of the material 10 is input to the controller 150, the controller 150 controls the laser cutting machine ( 100 is operated to cut the material 10.

As described above, the cutting device 500 of the present embodiment includes the laser cutting machine 100 and the mechanical cutting machine 200 in one device, and selectively operates any one of them according to the characteristics of the material 10. Since the cutting operation for the cutting material 10 is a material 10 having a relatively low strength that can be cut by the mechanical cutting machine 200, the cutting operation of the cutting material 10 by the mechanical cutting machine 200 is performed. The cost of maintenance and operation can be reduced, and when the material 10 to be cut is a material 10 having a relatively high strength, the laser cutting machine 100 effectively cuts the cutting material 10. Can be done.

On the other hand, in the present embodiment, the mechanical cutter 200 is illustrated as being disposed behind the laser cutter 100 with respect to the moving direction of the material 10, but the present invention is not limited thereto. The mechanical cutter 200 and the laser cutter 100 of the present invention may have various modifications such as the mechanical cutter 200 may be disposed in front of the laser cutter 100 or may be provided to be changeable in position if necessary. It is possible.

10 is a view showing a laser cutting machine according to another embodiment of the present invention.

For convenience of description, structures identical or similar in structure and function to the above embodiments are referred to by the same reference numerals, and detailed description thereof will be omitted.

Referring to FIG. 10, the laser cutter 300 according to another embodiment of the present invention includes an oscillation unit 110, a reflection unit 320, and a cutting unit 330.

The reflection unit 320 reflects the laser oscillated by the oscillation unit 110 and adjusts the width of the reflected laser. The reflective unit 120 includes a first reflecting unit 321 and a second reflecting unit 325.

The first reflector 321 is disposed at a position close to the oscillation unit 330. The laser oscillated by the oscillation unit 110 is irradiated to the first reflecting portion 321 and reflected by the first reflecting portion 321. The first reflector 321 and the second reflector 325 to be described later may include a reflector 136a (see FIG. 4) for reflecting the laser.

By the first reflecting portion 321, the laser is reflected toward the second reflecting portion 325. The second reflector 325 reflects the laser reflected by the first reflector 121 toward the cutting unit 330. The second reflecting portion 325 is provided to interlock with the cutting unit 330. According to this embodiment, the second reflecting portion 325 is installed in the cutting unit 330 is moved together with the cutting unit 330. The first reflecting portion 321 and the second reflecting portion 325 may be connected by a flexible corrugated pipe (not shown).

According to the present embodiment, at least one of the first reflecting portion 321 and the second reflecting portion 235 has a reflecting mirror 136a having a reflecting surface 136b (see FIG. 4) in which the radius of curvature is changed by pressing. It includes.

As such, the reflecting mirror 136a provided in the reflecting unit 320 is similar to the reflecting mirror 136a provided in the condensing reflector 136 (see FIG. 3) illustrated in one embodiment of the present invention. As the shape is changed by the control of), the width of the laser oscillated by the oscillation unit 110 is maintained at the set width.

On the other hand, the light converging reflector 336 provided in the cutting unit 335 of the cutting unit 330, may be provided in the form including a reflector 136a, as in an embodiment of the present invention, only a flat reflective surface It may be provided in the form including a reflector having a.

According to the present exemplary embodiment, the controller 150 (see FIG. 5) controls the operation of the reflector 136a in consideration of the position of the cutting unit 135 and the path length of the laser.

As a result, the shape of the reflecting surface 136b of the reflecting mirror 136a is changed by pneumatic pressure. The reflector 136a has a convex mirror shape as the path length of the laser is shortened according to the position of the cutout 335, and the concave mirror shape as the path length of the laser according to the position of the cutout 335 is long. Will have Accordingly, the width of the laser reflected by the reflection unit 320 may be amplified or reduced to match the set width.

When the width of the laser reflected by the light converging reflector 136 coincides with the set width, the focus of the laser condensed by the light condenser 137 is exactly matched to the surface of the portion to be cut of the material 10. The cutting operation for 10 can be performed effectively.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a view schematically showing a cutting device according to an embodiment of the present invention.

2 is a view showing the laser cutting machine shown in FIG.

3 is a view showing the cutting unit shown in FIG.

FIG. 4 is a view schematically illustrating the light reflecting unit shown in FIG. 3.

5 is a configuration diagram showing the configuration of the laser cutting machine shown in FIG.

6 to 8 are views showing the operating state of the laser cutting machine shown in FIG.

9 is a view showing a cutting state of the material by the cutting device according to an embodiment of the present invention.

10 is a view showing a laser cutting machine according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100,300: laser cutting machine 110: oscillation unit

120,320: reflection unit 121,321: first reflecting unit

125,325: second reflector 130,330: cutting unit

131: main body 133: main body moving part

134: cutting moving part 135,335: cutting part

136,336 Condensing Reflector 137 Condenser

138: light collecting unit 139: spraying unit

140: distance measuring unit 150: control unit

200: mechanical cutter 210: drum

220: knife 500: cutting device

Claims (13)

An oscillation unit for oscillating a laser; And And a cutting unit for controlling a light width of the laser oscillated by the oscillation unit, and a cutting unit for cutting a material by irradiating the laser reflected from the light reflecting unit. The method of claim 1, The light converging reflector includes a reflector having a reflecting surface whose radius of curvature is changed by pressing. According to claim 1, The cutting unit, Main body; A cutting part installed on the main body, the cutting part including a light collecting part for collecting and irradiating a laser reflected by the light reflecting part and the light reflecting part; And And a cutting moving part for moving the cutting part in a second direction. The method of claim 3, The cutting unit further comprises a light collecting unit for moving the light collecting unit in the third direction. The method of claim 3, The cutting unit further comprises a main body moving unit for moving the main body in the first direction. The method of claim 3, The cutting unit further comprises a spraying unit for injecting a gas toward the laser irradiation position. The method of claim 1, And a reflecting unit for reflecting the laser oscillated by the oscillating unit to the condensing reflecting unit. An oscillation unit for oscillating a laser; A reflecting unit reflecting the laser oscillated by the oscillating unit and adjusting the width of the reflected laser; And And a cutting unit for cutting a material by irradiating the laser reflected by the reflection unit. The method of claim 8, The reflector includes a first reflector oscillated by the oscillation unit and a second reflector that reflects the laser reflected by the first reflector to the cutting unit and interlocks with the cutting unit; At least one of the first reflecting portion and the second reflecting portion includes a reflector having a reflecting surface whose radius of curvature is changed by pressing. A laser cutter including an oscillation unit for oscillating a laser, and a cutting unit for adjusting a light width of the laser oscillated by the oscillation unit, and a cutting unit for cutting a material by irradiating a laser reflected from the light reflecting unit; And Cutting device comprising a mechanical cutter for cutting the material provided with a knife. Laser cutting machine including an oscillating unit for oscillating a laser, a reflecting unit for reflecting the laser oscillated by the oscillating unit and adjusting the width of the reflected laser and a cutting unit for cutting the material by irradiating the laser reflected from the reflecting unit ; And Cutting device comprising a mechanical cutter for cutting the material provided with a knife. The method according to claim 10 or 11, wherein The mechanical cutter further comprises a drum portion rotatably disposed at at least one of the upper and lower portions of the material; And the knife part is installed in the drum to cut the material by contacting the material when the drum is rotated. The method according to claim 10 or 11, wherein And a control unit for operating any one selected from the laser cutter and the mechanical cutter.

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